Rock crusher



July 28 1925..

A. D. HADSEL ROCK GRUSHER I Filed March 5Q 1925 INVENTOR. 4. 0. 6600561.

A TTORNEYS.

2' Patented July- 28, 1 92.5.-

UNITED STATES I l 1,547,385 PATENT OFFICE.-

ALVQHHD. HADSEL, or sanrimncrsco, cAmroanm.

noon CIR-USHER.

Application filed March 5, 1923. Serial mi; 623,041.

' T aZZ whom it may concem:

Be it .known that I, ALVA}; D. Hansicn, a citizen of the United States,and a resident of San Francisco, "county of San Francisco, State ofCalifornia, have invented a new and useful Rock Crusher, of which thefol lowing is a specification.

The present invention relates to improvements in rock crushers, and hasparticular reference to a centrifugal rockcrusher designed forcontinuous operatign. The principal object of the invention is toprovide a machine of the character described that will be highlyeffective, that is simple in construction and well balanced. A further-tion so as'to allow of the successive exposureof eight differentedges.Other objects and advantages will appear as the specification proceeds.

The preferred form of my invention is.

illustrated in the accompanying drawing, in

which Figure 1 shows a view of my device partly in plan, partly insection, taken along line A-'-A of Figure 2, and partly in section takenalong line B-B of Figure 2, and Figure 2 a side View of my device partlyshown in section. While I have shown only the preferred form of theinvention, it

should be understood that various changes or modifications may be madewithin the scope of. the claims hereto attached without departingfrom-the spirit of the invention.

-My rock crusher (1) comprises a frame (2) consisting of two cylindricalelements 3) and (4). arranged in concentric relation and connected bymeans of webs The,

outer element (3) is provided with a plural: ity of openings (6) adaptedto be-closed when desired by means of plates (7) bolted thereto as shownat .Any of these openings may be used toallow the belt (9) topasstherethroughwhichv latter. is protected from rocks by means of a metalcasing (11) projecting inwardl openings and bolte to the cylindricalelement (4) as shown at (12) and surrounding the area controlled by thebelt (9). The

through "one of the inner element (4) consists of a tube adapted torotatably receive, with a bushing (13) interposed, the main shaft 14) ofmy de-- vice, which latter is supported by means of a thrust bearing(16) resting on the tube.

wall of an oil chamber (17) surrounding the whole tube. The outerv wall(18) of said chamber which is connected to the inner wall (4) by.meansof webs (19') extends above the bearing (16) so as to allow the chamberto be filled with oil to a height exceeding "the level .of the bearing.The oil chambers are closed at the bottom by a bottom plate (21) whichis'provided with a recess (22) allowing the oil to flow underneath theshaft (14) so that complete circu lation of oil around the shaft isprovided. To the upper end of the shaft is secured the rotor (23)comprising acylindrical,

member (24), a base plate (26) and a top This tube at the same timeforms the inner plate (27 The base plate is provided with" 'a centralhub (28) toothed as shown at (29) to return oil that may splashupwardly, and

a downwardly extending flange (31) around which is placed the cylinder'(32) serving'as a pulley for the rotor. The lattercylinder is securedto the-base plate by means of bolts (33), some of which extend upwardlyso as to pass through the top hold the same place. 0th top and botlate(27) and to tom plates are provided with peripheral flanges (34) adaptedto be received in registering peripheral grooves of the cylindrlcalmember (24). preferably of three sections (36) leaving spaces betweenthe same as shown at (37) through whichthe rocks may be thrown outwardlyby centrifugal force.

The latter member consists The outer frame member (3) supports the bowl(38) which latter is disposed on the same plane with the rotor and inconcentric relation to the same, This bowl is open, at the bottomexcept. for a small peripheral flange (39) on which are supported theim-' pact receiving plates or blocks (41). The

latter are disposed at a suitableangle to radial lines, and are made ofsquare vertical section. They are held in place by means ,of

plates (42) bolted to the flange (39) by means of bolts (43) the platesengagipg the lower edges of the blocks. The upper edges of the Sameblocks-are held in place by the, Y

top plate (44) of the bowl which is provided with correspondingslots orgrooves as dotted at (41) so as to hold the blocks in place.

A particular feature of this arrangement is that these blocks may beturned around eight times to expose a new edge to therocks vthrownoutwardly by the rotor. Above the bowl (38) is mounted the hopper (46)provided with anopening (47-) communicating with the neck (48) of therotor.

Oil is allowed to enter "the chamber (17) throiigh the pipe (49). Acylindrical wall (51) surrounding the pulley (32) serves as a divisionwall and prevents the rocks falling through the bottom or the bowl fromstriking the pulley. The broken rocks drop on chutes (52).

The operation of the device will be readily understood from theforegoing description. The rocks to be crushed are placed in the hopperby any suitable means and dropped through the opening in the bottom ofthe same lnto the rotor (23). The latter is rotated by means of anysuitable power engaging through the belt (9) the pulley (32).

Particular attention is drawn to the manner in which the rotor issupported by the behind the sections (36) and to form a guidewa for therotating rocks, thereby taking t e main strain off the edges of thesections (36). The rocks are thrownviolently against the blocks (41) andcome in crushing contact with the same, whereupon they drop through theopen. bottom of the bowl (38) into the chamber defined by the outerframe element (2) and the cylinder (51), so that at no time they come incontact with the pulley (32) or the belt (9), which latter isadditionally protected by the casperipheral relation to the rotor eachat an angle to a radial line therefrom and each block being reversibleto eight different positions for exposing any of eight angular edges tothe impact of the matenal.

2. In a centrifugal rock crusher, a rotor adapted to hurl the rockstangentially therei from, a cylindrical member surrounding the rotor, aserles of square impact blocks, up-

per and lower grooved annular members associated with said cylindricalmember engaging and clamping said blocks in spaced relation peripherallyaround the rotor, said blocks each having eight angular edges of equallength and. being reversible in the vas 4 grooves to eight difierentpositions to bring any one of t ceiving position.

' ALVAH D. HADSEL.

e eight edges intoimpact re 1

